Lazer, David, Oren Tsur, Katherine Ognyanova, and Ryan P. Kennedy. 2015. “DATA: Trump Won the Debate - or at Least Talked the Most”. Politico, 2015.
See also:
21st Century Democracy

Abstract
While numerous political commentators have offered up their opinion about who won or lost last week’s GOP debate, we here at the Lazer Lab at Northeastern University spent the last week looking at the numbers. Actually, we looked at the words: What did candidates actually talk about? How much did they talk, and for how long? The answers gave us three new ways to think about what mattered in the debate, and who won.